Hi,
I was a bit surprised that the soundtracks made for the open movie
projects of Blender (which are great!), are made with proprietary
software. So I opened a discussion about this on their forums and got a
reply from the producer of the projects Ton Roosendaal:
http://www.blender.org/forum/viewtopic.php?p=74539#74539
The discussion is if the open source audio tools are good enough to do
such a project and if there are people who are able to do the job of
making a soundtrack for the open movie projects with those open source
audio tools.
Join the discussion on that forum if you want.
\r